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example 4. Multiply 153 by 26.
Solution. Here, the multiplier 26 = 2 tens + 6 ones = 20 + 6. So, we multiply 153 by 26
stepwise as shown below.
Step 1. Multiply 153 Step 2. Multiply 153 Step 3. Add the partial
by the ones. by the tens. products.
Th H T O Th H T O
1 5 3
H T O 1
3 1 1 5 3 × 2 6
1 5 3 × 2 6 9 1 8
× 2 6 9 1 8 + 3 0 6 0
9 1 8 3 0 6 0 3 9 7 8
153 × 6 = 918 153 × 20 = 3060 918 + 3060 = 3978
So, 153 × 26 = 3978.
Exercise 4D
1. Multiply.
a. 2 3 b. 4 1 c. 5 6 d. 7 3
× 2 3 × 1 2 × 1 8 × 6 4
+ + + +
e. 2 0 4 f. 2 3 3 g. 1 4 3 h. 2 7 3
× 1 2 × 2 3 × 3 6 × 2 7
+ + + +
2. Write the numbers in columns and find the product in your notebook.
a. 34 × 21 = _____ b. 12 × 43 = _____ c. 12 × 21 = _____
d. 223 × 33 = _____ e. 324 × 11 = _____ f. 231 × 32 = _____
g. 33 × 22 = _____ h. 73 × 52 = _____ i. 264 × 31 = _____
j. 365 × 23 = _____ k. 432 × 11 = _____ l. 174 × 42 = _____
80 Mathematics 3
